← Wells

42-489-30846

Final Completion

SAUZ RANCH MULATOS PAST.

WILLACY County · District 4 · CHESTNUT EXPLOR. AND PROD. INC. · WILLAMAR WEST (MIOCENE 6050 N)

Permits

4

Max Depth

9,100 ft

First Permit

1985-01-18

Latest Activity

2013-09-18

Lifespan

29 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1989-10-16

Shut-In

—

Plugged

—

!

EWA / Permit operator mismatch

Scheduling: CHESTNUT EXPLOR. AND PROD. INC. ≠ Permit: FLINT OAK ENERGY, LLC

Resolved via: scheduling → CHESTNUT EXPLOR. AND PROD. INC.

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Injection / Disposal

H-1 Injection Cancelled 1991-04-17 UIC #000059719 permitted 1986-02-14

Permitted Volume

1,500 bbl/d

Max Pressure

1,800 psi

Injection Interval

7,864–7,935 ft

Injected (12mo)

315,939 bbl

H-1 Injection Active UIC #000105747 permitted 2012-09-26

Permitted Volume

6,000 bbl/d

Max Pressure

2,500 psi

Injection Interval

5,050–6,030 ft

Injected (12mo)

315,939 bbl

Monthly injected volume (bbl, from H-10 filings through 2025-05-01)

Operator History

Chain of Custody

PARKER & PARSLEY DEVELOPMENT L.P 1996-1997→ PIONEER NATURAL RES. USA, INC. 1997-1999→ PRIZE OPERATING COMPANY 1999-2002→ GRUY PETROLEUM MANAGEMENT CO. 2002-2006→ CIMAREX ENERGY CO. OF COLORADO 2006-2011→ FLINT OAK ENERGY, LLC 2011-2014→ CHESTNUT EXPLOR. AND PROD., INC. 2014-2017

Lease Production

Production is reported at the lease level. View production data, decline curves, and history on the lease page.

Oil
production & DCA →
Oil
production & DCA →
Oil
production & DCA →

Formation Tops (1) Elevation 17 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
MIOCENE (Miocene (undifferentiated))5,510 ft-5,493 ft

As reported by operators on W-2/G-1 completion filings (RRC wellbore records). Depths are measured depth; names appear as filed. Subsea = reported elevation − measured depth (negative = below sea level; vertical wellbores only). View filings & logs at RRC ↗

Perforations (9)

IntervalType
5,125–5,140 ftPerforated
5,255–5,270 ftPerforated
5,415–5,435 ftPerforated
5,510–5,530 ftPerforated
5,514–5,519 ftPerforated
6,060–6,064 ftPerforated
7,864–7,935 ftPerforated
7,890–7,926 ftPerforated
7,950–7,968 ftPerforated

Casing (2)

SizeSet DepthCement
8.625"1,568 ft1,210 sx
5.5"8,095 ft1,078 sx

Permit History (4)

#769757 Recompletion Final Completion

SAUZ RANCH MULATOS PASTURE · 8,100 ft

2013-09-18

Spud 2012-09-29

#366212 Recompletion Final Completion

SAUZ RANCH MULATOS PASTURE · 9,100 ft

1989-11-14

#362213 Recompletion U

SAUZ RANCH MULATOS PASTURE · 9,100 ft

1989-08-07

#264512 Drill U

SAUZ RANCH - MULATOS PASTURE · 9,100 ft

1985-01-18

Spud 1985-03-14

Applications (4)

#769757 A FLINT OAK ENERGY, LLC
received 2013-09-10
#366212 A EXXON CORP.
received 1989-11-09
#362213 A EXXON CORP.
received 1989-08-01
#264512 A EXXON CORP.
received 1985-01-17

Records & Logs

12 completion filings on record · 4 with log images at RRC.

W-2/G-1 2022-04-07
W-2/G-1 2021-06-21
W-2/G-1 2019-02-26
W-2/G-1 2013-11-25 log on file
W-2/G-1 2013-11-25 log on file
W-2/G-1 1990-01-22 log on file

+6 more filings

Completion packets + logs ↗ Wellbore filings ↗

Completion packets open directly (post-2011 filings include attached logs). Log images can't be deep-linked — clicking copies the API for you to paste.

No GPS coordinates yet

Coordinates come from the RRC GIS backfill and usually appear within days of permit issuance. Located in WILLACY County.

Well Details

Well Number
185
Max Depth
9,100 ft
Drill Type
Vertical
County
WILLACY
District
4
Operator
CHESTNUT EXPLOR. AND PROD. INC.
Completed
1989-10-16

Operator

Location
DALLAS
P-5 Status
Delinquent (filed 2017-02-01)
Cum Oil (all leases)
145,180 bbl
Cum Gas (all leases)
177,198 mcf
Activities
OPRS/O
Total Permits
5